Academic Journal
Sagebrush Ingestion by Lambs: Effects of Experience and Macronutrients
| العنوان: | Sagebrush Ingestion by Lambs: Effects of Experience and Macronutrients |
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| المؤلفون: | Burritt, Elizabeth A., Banner, Roger E., Provenza, Frederick D. |
| المصدر: | Green Canyon Environmental Research Area, Logan Utah |
| بيانات النشر: | Hosted by Utah State University Libraries |
| سنة النشر: | 2000 |
| المجموعة: | Utah State University: DigitalCommons@USU |
| مصطلحات موضوعية: | Animal Sciences, Biology, Environmental Monitoring, Natural Resources and Conservation, Plant Sciences, Population Biology, Soil Science, Terrestrial and Aquatic Ecology |
| الوصف: | We investigated how experience early in life and macronutrient content of the diet influenced intake of mountain big sagebrush (Artemisia tridentata Nutt. ssp. vaseyana (Rydb.) Beetle) by sheep. In the first part of our study, 2-month-old lambs were exposed as a group for 2 mo to a 70% barley-30% soybean meal ration (300 g/hd/day) that contained increasing amounts sagebrush (1 to 20%). Control lambs received grain without sagebrush. All lambs had access to alfalfa hay and pellets ad libitum. When lambs were tested at 6 months of age, prior exposure had no effect on sagebrush consumption after the first 4 days of the trial. When sagebrush comprised 20% of an alfalfa/barley ration, lambs ate the sagebrush ration readily even when a nutritious alternative was offered indicating the flavor of sagebrush did not prevent lambs from feeding. Increasing the amount of sagebrush in the ration from 50% to 75% resulted in lambs eating less of the barley/sagebrush ration, but daily intake of sagebrush remained constant throughout the 4 day trial, presumably because toxins (terpenes) limited intake of sagebrush. In the second part of our study, lambs experienced with sagebrush were fed 250 g/hd/day of barley, and nutritional status was varied by offering alfalfa pellets at 33% or 80% of ad libitum (1.2 and 2.7 times maintenance, respectively) to determine if dietary energy levels affected intake of sagebrush. Each day lambs received a 50/50 sagebrush/barley supplement ad libitum for 1 hour. Lambs fed at 33% of ad libitum consumed more of the sagebrush/barley supplement than lambs fed at 80% of ad libitum. Thus, additional energy did not enable lambs to consume more sagebrush. In the last trial, lambs in both treatments were fed a basal ration of alfalfa pellets at 50% of ad libitum. Each morning for 1 hour, lambs were offered macronutrient supplements containing either 50% barley/50% sagebrush (high energy) or 25% barley/25% soybean meal/50% sagebrush (high energy and protein). Lambs consumed the same amount of sagebrush ... |
| نوع الوثيقة: | text |
| اللغة: | unknown |
| Relation: | https://digitalcommons.usu.edu/grcanyon/146; http://dx.doi.org/10.2458/azu_jrm_v53i1_burritt |
| DOI: | 10.2458/azu_jrm_v53i1_burritt |
| الاتاحة: | https://digitalcommons.usu.edu/grcanyon/146 https://doi.org/10.2458/azu_jrm_v53i1_burritt |
| Rights: | Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact the Institutional Repository Librarian at digitalcommons@usu.edu. |
| رقم الانضمام: | edsbas.AE4B5645 |
| قاعدة البيانات: | BASE |
| DOI: | 10.2458/azu_jrm_v53i1_burritt |
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